Pump.



M. LEBLANB.

PUMP. v

APPLICATION man SEPT. 2 1909.

.R. I 0 C 6 T a A N W F M m w m; m m R w 0 m P M M. LEBLANCL PUMP.

APPLICATION FILED SEPT. 20. I909- 1,1'78,T651. I Pafented Apr. 11,1916.

3 smzsrs-snan 2.

HAFA/TTORNEY 1N .Fsacr.

I INVENTOR kk BY M. LEBLANC.

PUMP.

APPLICATION FILED SEPT. 20, 1909.

wwme Patentd Apr. 11, 1916.

3 SHEETS-SHEET 3- midd e.

MAURICE LEE-LANG, OF PARKE, TERA'NCE, ASSIGNGE LEXPLOITAEFEDN HESFROCEBES WEfiTING'HOUSE-Ii:

T ELQCIEEETE ANON'YlIIE IQUB. EBLAIIQU, 9F PARIS, FRANGE.

PUMP.

Specification of Letters i'atcnt.

Patented Apr-.11, 1918.

Application filed. September 20, 1909. Serial No. 518,678.

' tic fluid pumps and also to a method of pumping air or other elasticfiuid.

In a co-pending apphcatmn filed by me tor United States Letters Patent,

iatured on February 14, 1911, intolPatent ho. 984,-

27 8) I have described a fluid translating device comprising a partialinjection type'of rotatable impeller discharging into a; collectingchamber or combining tube which, in turn, discharges into a diizuser.The device in said application is illustrated as applied to a condensingapparatus. In the device of said application, while the rotatableimpeller discharges liquid therefrom in the form of films or leaves,the-cross-sectional area of the combining or collecting chamber is suchthat the leaves upon, or immediately ar'ter, being formed and rejectedinto the chamber are probably bro en up into an infinite number ofdrops, like spray, because in said device the cross-sectional area ofthe combining or collect ng chamber is such that the leaves or films 1fcompletely formed at the time they are discharged from the rotatableimpeller, can only partially fill or bridge the chamber. In other Words,the chamber s shown as sub stantially circular in crosssection and theliquid projected into one side oi the chamber at most can only assume afan-like form wh (ch can reach but a small portion of the e1 re wallsurface of the ob. mber. As the anor Si Pam or other elastic fluid canescape lrom be wen the SllpCGSSlVQ leaves formed, it is probaole thatthe leaves either at the time of formation or immediately thereafter arebroken up, as before described. It has been found that such a device,while it makes an especially efficient condenser, does not make an airpump such as may be desired.

In still another co-pending zi'pplication filed by me on September 141,1909, Serial h uinber 517,691 for United States Letters Patent 1 havedisclosed an air or other elastic fiuic pump in which such a partialinjection type of rotatable impeller is utilized and in this device, bymeans of making the cross-sectional area of the combining or col-France,,

lecting chamber such that the liquid leaves discharged by the rotatableimpeller substantially fill or bridge it'as a. piston does a cylinder, Ihave been enabled to obtain a much more efilcient air or other elasticfluid pumpthan the device of said first application makes. In thedevice, however, of said second pending application, I utilizesubstantially the same form of blades for the rotatable impeller as inthe device of the first application and an object of this invention isto produce an air or other elastic fluid pump which will be superior toand more eiiicient than the device of said second application. In ageneral way, the device of said second application, and the device ofthis applica tion are the same, but in certain important details theydiffer.

The method of pumping air in accordance with this invention, which maybe carried out by means of the device hereinafter described or by meansof other devices than the one here described, broadly consists in confining air r other elastic fluid between adjacent leaves of a rapidlymoving column or stream composed of a succession of liquid leaves,whereby the air or other elastic fluid is caused to move with the columnand then in converting the velocity of the column into pressure. A

In the drawings accompanying this application and throughout whichsimilar elements are denoted by like characters: Figure 1 is a view insectional elevation taken on the line 11 of Fig. 3 of an air or otherelastic fluid pump embodying this invention;

Fig'. 2 is a sectional view taken on line 2-2 of Fig. 1, locking in thedirection of the arrow; and, Fig. 3 IS a top plan view of said ump.

The pump, l' roadly,.consists of a rotatable impeller wheel providedwith a row of axially-disposed blades. A distributer is located withinthe inner periphery of the row of blades and adapted to receive water orother liquid from some suitable source and to deliver itto a number ofthe hla des less than the total number. T he rotatable impeller,- sincethe dist ilmler distributes Water or other liquid to. a number of theblades of the impeller less than the total number,is therefore a partialinjection impeller. The liquid thus distributed to the blades isprojected by them at ahigh velocity and in the form of extremely thinsheets across a conduit or channel at a point between the inlet and ll.3 outlet of the channel. The channel or conduit has an inlet forelastic fluid to be pumped, a combining tube or collecting chamber forthe propelling liquid and the fluid to be pumped and a diffuser whereinthe stream formed of the liquid and fluid is compressed and from theoutlet of which it is discharged. The conduit or channel at the pointoi? delivery of liquid from the blades is of such cross section andcontour relative to the sheet or film of liquid discharged into it thatthe film completely, or substantially completely, blocks it off as apiston does a cylinder. The bladed wheel or impeller is rotated by anysuitable means,

such as a turbine, electric motor or reciproxating engine. at such aspeed that theperipheral speed of the blades will give to the impellingliquid a high velocity and Will project the leaves or films of liquidacross the conduit and toward and through the diffuser. By making theconduit or channel as I have in the present case of such cross sectionthat the liquid leaves or films can complet ly, or substantiallycompletely, fill the channel or span it as a piston does a cylinder, Ifind that X can approach the theoretical quantity of fluid which can bemoved to a. given quantity of liquid at a given speed o'l liquid and Ifind that I can discharge the pump against a considerable head.

I find. that the pump is especially applicable as an air pump forcondensers of the.

surface, jet and barometric types and that by means of the same I amable to produce in such condensers the theoretical vacuum under wideranges of conditions.

The pump preferably consists of a wheel or disk 5 mounted upon a shaft 6and provided with an annular row of axially-disposed blades 7. The outeror free ends of the blades are provided with shroud 8 While the innerends are secured to the wheel by means of a foundation nieinber- 9. Theinner walls of both the shroud and the Foundation member are straightand pa ral lcl one to the other as shown at 10. The shaft 6 is journaledin suitable bearings 11 and 12 and passes through stuffing boxes 13 iand 14, the bearings and stutling boxes be ing carried by the sideplates or flanges l5 and 16 of the device. A central body member 17 issecured to the side plates or flanges 15 and 16 by means of two sets ofbolts 18 and 19.

The side plate or flange 1.6 is formed with a chamber provided by theouter wall of the side and an inner wall. 20 joined to the side by meansof a wall 21 which lies just within the row of blades 7. This chamber,which I will term the distributing chamber, is provided with inlet 21"for water or other impelling liq. '3. and an outlet or distribut ing'spout or nozzle 22 which simultane ously delivers Water to a. number ofblades of the wheel. less than the total nu ber. In the apparatusdisclosed in drawings it is formed so that it may deliver to four orfive blades at one time.

It will be seen that by loosening bolts 18, which pass through aretaining flange L"?- and into the inner or bodyportion 17,

1c plate 16 c'arrying the distributing chamber may be rotated about itsaxis and the distributing spent 22 adjusted. to the prewar position andby tightening these, the r tributing spout may be locked in properposition.

Carried by the central or body portion is the channel or conduit beforei and composed of the inlet chamber .2 collecting chamber or combiningtube 2;) and the diffuser 26. The collecting chamber or combining tube 2is formed in the nature of a bushing 27 secured within the main casting17. As the. liquid discharge the rotatable impeller contacts-r5 walls ofthis chamber, it is preferhbl in,the nature of a bushing so as to berenewable if necessary.

In order to prime the pump, an inject device located adjacent to theinlet the diffuser 26. This device consists a cone 2S seated between theeastin and the ditluser and which forms the inlet end of the di'lt'usu'.Around this cone an annular chamber is left and this is provided with aninlet 30 for sites water under pressure as is desired, a: means of thisdevice the pump may primed.

In accordance with the provisions of the patent statues, I havedescribed the principle of operation ot' my invention, with theapparatus which I new 0 i to represent the best embodiment but I desireto have'it understood, apparatus shown is only illustr. that theinvention can be carr? other means.

What l claim is:

l. in. an air or other elastic a chamber provided with an i. and anoutlet, a bladed impell r in." so as to project liquid at a relativelyvelocitv in the form of films or said chamber between the inlet and on.thereof and an adjustable distributer delivering liquid to a number ofthe of said impeller less than t p 2. ln an air or other elastic fluidpen a chamber provided with an rhllet and an outlet, an impellerpiovided blades and arranged so as to project ii me at a relatively'highvelocitydn s vidcd state into said chamber saw inlet and outlet thereof,an adjiigf sl tributer for delivering llquidlfto s;

a collecting and combining chamber, a diffuser communicating therewith,a rotatable impeller adapted to discharge liquid into said chamber andan adjustable nozzle for delivering liquid to said. impeller. 4

at. In an air or other elastic fluidpump,

a-collecting and combining chamber, a diffuser in line therewith, abladed rotatable impeller and adjustable means for distributing liquidto a number of blades of said impeller less than the total number.

5. In an air or other elastic fluid pump, a collecting and combiningchamber, a diffuser, a rotatable impeller and adjustable means locatedwithin the perlphery of said impeller for distributing liquid to anumber of blades thereof than the total number.

6. In a fluid translating device, a chamber having a fluid inlet and afluid outlet port, a combining tube and a diffuser communicating withthe outlet port, and means for projecting liquid at a relatively highvelocity into the combining tube, and through the diffuser, comprisingan impeller, an annular row of laterally projecting'blades mounted 011vand located concentrically 'with the impeller, a casing'for the impellercomprising a central body portion surrounding said impeller, end platesmounted .on opposite sides of said central portion one of which isadjustable and is provided with a liquid distributing chamher and aninlet communicating with the chamber, and a distributer for deliveringliquid from the chamber to the blades located Within and communicatingwith the chamber, and mounted on said adjustable end plate.

7. In a fluid translating device, a chamber provided with an inlet forfluid and'an outlet, an impeller having an annular row of-laterallyprojecting blades mounted thereon for projecting liquid into saidchamber and; for

discharging it through the outlet, a casing for the impeller having anadjustable end plate provided with a liquid distributing chamber and aliquid inlet communicating with the chamber and a liquid distributer fordelivering liquid to the blades mounted on said adjustable end plate andcommunicating with said chamber.

8. In a fluid translating device, a chamber provided with an inlet forfluid and an'outlet, an impeller, an annular row of blades mounted onthe impeller, a casing for the impeller'having a liquid distributingchamber formed therein and provided With a liquid inlet, an adjustableend plate :Eorming a Wall of the chamber and an adjustable distributerfor delivering liquid from the chamber to said blades mounted on saidend plate.

. In testimony whereof, I have hereunto subscribed my name this thirdday of September, 1909.

MAURICE LEBLANG. Witnesses:

ETIENNE SOULIE, P. LEBLANC.

